/Engine/Plugins/Experimental/VirtualCameraCore/Source/PixelStreamingVCam/Public/VCamPixelStreamingSubsystem.h
Get the LiveLinkSource if it already exists or attempt to create one Additionally registers the OutputProvider to the Source if a new source was created
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< FPixelStreamingLiveLinkSource > TryGetLiveLinkSource ( [UVCamPixelStreamingSession](API\Plugins\DecoupledOutputProvider\BuiltinProviders\UVCamPixelStreamingSession) * OutputProvider )